central boiler. fair install price.

it seems that the dealer network in my area is small. i found a
dealer that will install the unit. ( i have gas forced hot air and
gas hot water)
install 6048 with 2 additional chimneys
install heat exchanger on water heater and furnace(140 k h/e coil)
install a whole list of parts, fittings,etc...
install concrete slab boiler unit,trench line,(135' of pex) back fill
line,supply permit for boiler.

total labor $3358.00

what do you guys think about that labor price?
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i can save more by trenching it myself,install pipe,backfill supply
boiler pad,supply permit (savings of $425) wow!